Perhaps you should try some spelling variations:
thuoc sach » hoc sach, nuoc sach, thuat sach
thanh lap » thanh san, phan lap, thanh hai
toc sach » hoc sach, doc sach, nuoc sach
va thanh » gia thanh, ban thanh, va tinh
ky dang » ky nang, ky danh
tao hoi » tao khoi, tao boi, tay hoi
ky sang » ky nang, ky tang, duy sang
hieu ve » hieu va, hieu van
ve pham » vi pham, v pham, ve phan
lap cua » lai cua, tap cua, lam cua
cua te » cua tu

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: ((toc sach) or (thuoc sach)) ((ky sang) OR (ky dang)) tao hoi. hieu ve pham duc va thanh lap cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((toc sach) OR (thuoc sach)) ((ky sang) OR (ky dang)) tao hoi. hieu ve pham duc va thanh lap cua te.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((toc sach) or (thuoc sach)) ((ky sang) OR (ky dang)) tao hoi. hieu ve pham duc va thanh lap cua te".
• Adding a wildcard symbol may retrieve word variants: ((toc sach) or (thuoc sach)) ((ky sang) OR (ky dang)) tao hoi. hieu ve pham duc va thanh lap cua te*.